If kinetic energy is conserved by the apparatus shown in this figure, why do we find in class demonstrations that the balls eventually come to rest?
a. Because the commercial versions of this apparatus are not built to exact specifications.
b. Total energy, not kinetic energy, is conserved; the rest of the energy going to heat; but the heat loss in this experiment is normally ignored since it occurs very slowly.
c. Because as some of the balls come to rest, others speed up.
d. Because a hidden battery supplies the energy to keep the balls moving, and eventually runs out of energy.
e. Total energy but not kinetic energy is conserved, the rest of the energy going to heat; but the device transforms the thermal energy back to kinetic energy.
Question 2
The unit for kinetic energy is the:
a. impulse.
b. newton.
c. joule.
d. watt.
e. kilogram.
The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
GI series. (a) Upper GI series begins with a barium swallow, barium shake, or barium meal. (b) Lower
Effect of the activation energy barrier.
A water spray bottle is an excellent diagnostic tool to help find an intermittent engine misfire ...
Permafrost: High albedo, reflects as much as 90% of the Sun’s energy
Find a quadractic equation that models the data in standard form